package 第1节循环语句;

import java.util.Scanner;

/*
         num
 1  2  3  2  3
      pre
*/
public class AnLi05 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        int pre = 0;    //前驱数字
        boolean flag = true;
        for (int i = 0;i < n; i++) {
            int num = input.nextInt();
            if (i == 0) {
                pre = num;
            }
            if (pre <= num) {
                pre = num;
            } else {
                flag = false;
                break;
            }
        }
        if (flag) {
            System.out.println("递增");
        } else {
            System.out.println("不递增");
        }
    }

}
